surmisantn.

/səːˈmʌɪzənt/Etymology: < surmise v. + -ant suffix1, after informant.
1748 S. Richardson VI. xx. 62 He meant no reflection upon her Ladyship's informants, or rather surmisants (as he might call them).
This entry has not yet been fully updated (first published 1918; most recently modified version published online September 2019).